Makita DHR400 Manuel D'instructions page 14

Chisel angle (when chipping,
scaling or demolishing)
The chisel can be secured at the desired angle. To
change the chisel angle, rotate the action mode chang-
ing knob to the O symbol. Turn the chisel to the desired
angle.
► Fig.14: 1. Action mode changing knob 2. Pointer
Rotate the action mode changing knob to the
bol. Then make sure that the chisel is securely held in
place by turning it slightly.
Depth gauge
The depth gauge is convenient for drilling holes of
uniform depth.
Press and hold the lock button, and then insert the
depth gauge into the hex hole.
► Fig.15: 1. Depth gauge 2. Lock button
Make sure that the toothed side of the depth gauge
faces the marking.
► Fig.16: 1. Marking 2. Toothed side
Adjust the depth gauge by moving it back and forth
while pressing the lock button. After the adjustment,
release the lock button to lock the depth gauge.
NOTE: Make sure that the depth gauge does not
touch the main body of the tool when attaching it.
Dust extractor attachment
Optional accessory
Installing the dust extractor
attachment
1. Loosen the side grip on the tool.
Install the dust cover so that the claws of the dust
2.
cover fit in the grooves between the tool and the side
grip.
► Fig.17: 1. Dust cover 2. Claw 3. Groove
Tighten the side grip securely.
3.
Set the suitable bellows or dust cover extension
4.
for your work. When you use bellows, attach the joint to
its top. When you stack two bellows, connect them with
the joint.
► Fig.18: 1. Dust cover extension 2. Dust cover
3. Joint 4. Bellows
Connecting the tool to the vacuum
cleaner
Attach the holder joint to the tool, and then attach
1.
the hose holder to the holder joint.
► Fig.19: 1. Holder joint 2. Hose holder
Fix the hose to the hose holder.
2.
► Fig.20: 1. Hose holder
NOTE: Use joint 25 to connect the hose and the dust
cover if necessary.
Using depth gauge for drilling
operation
When you stack two bellows, attach the depth gauge
extension to the depth gauge.
► Fig.21: 1. Depth gauge extension
Dust extractor attachment (for
hammering only)
sym-
Optional accessory
1. Install the hose holder.
When the side handle is installed to tool, loosen the
clamp nut, and then remove the hex bolt. Install the
hose holder with the hex bolt and the clamp nut by
tightening the clamp nut firmly.
► Fig.22: 1. Bolt 2. Hose holder 3. Clamp nut
When the side grip is installed to the tool, loosen the
side grip, mount the hose holder to the shaft, and then
tighten the side grip firmly.
► Fig.23: 1. Hose holder 2. Shaft 3. Side grip
Attach the holder joint to the tool, and then attach
2.
the hose holder to the holder joint.
► Fig.24: 1. Holder joint 2. Hose holder
Attach the dust cover and the hose to the tool, and
3.
then fix the hose to the hose holders.
► Fig.25: 1. Dust cover 2. Hose 3. Hose holder
Connect the hose to the hose of the vacuum
4.
cleaner with the hose joint.
NOTE: If the hose is not included, attach the dust
cover to the cleaner's joint or attach it to Makita's
hose ø28.
Adjust the distance between the dust cover and
5.
the tip of the chisel or bull point. The recommended
distance is 30 mm to 100 mm.
► Fig.26: (1) 30 mm to 100 mm
OPERATION
CAUTION:
handle) and firmly hold the tool by both side grip
and switch handle during operations.
CAUTION:
piece is secured before operation.
CAUTION:
even the bit gets stuck. Loss of control may
cause injury.
NOTE: If the battery cartridge is in low temperature,
the tool's capability may not be fully obtained. In this
case, warm up the battery cartridge by using the
tool with no load for a while to fully obtain the tool's
capability.
► Fig.27
14 ENGLISH
Always use the side grip (auxiliary
Always make sure that the work-
Do not pull the tool out forcibly